上传后脚本：

var location = this.options.location;  //获取当前控件的位置

var cr = FR.cellStr2ColumnRow(location);

var c = cr.col;  

var r = cr.row;   

var view = contentPane.getWidgetByCell(FR.columnRow2CellStr({col: c, row: r+1}));//获取预览单元格，c和r+1根据实际情况调整

var name=this.wrap.attach_array[0].attach_id;

console.log(name);

var o=view.options;

o.fileaddr=encodeURIComponent(encodeURIComponent("F:/FineReport_10.0/webapps/webroot/WEB-INF/assets/temp_attach/"+name));//安装路径

var filepath = decodeURIComponent(decodeURIComponent(o.fileaddr));

var filename = "";

if(filepath != ""){

    if(filepath.indexOf("/")!=-1){

        filename = filepath.substr(filepath.lastIndexOf("/")+1);

    }else if(filepath.indexOf("\\")!=-1) {

        filename = filepath.substr(filepath.lastIndexOf("\\")+1);

    } else{

        filename = filepath;

    }

}

o.value = filename;

var sessionid = o.widgetUrl.substr(o.widgetUrl.lastIndexOf("=")+1);

var url = "ReportServer?op=resource&resource=/pdfjs-dist/web/viewer.html&para=";

if(o.envVersion> 9){

    url = FR.server+"/decision/view/report?op=resource&resource=/pdfjs-dist/web/viewer.html&para=";

}

var encodeData = window.btoa("allowdownload=" + o.allowdownload +"&allowAPI="+o.allowAPI + "&watermark=" + o.watermarkstr + "&file=" + o.fileaddr+"&sessionstr="+sessionid)

o.src =url+encodeData;

console.log(o.src);

view._changeIframe(o.src);

稍等，之前没玩过的 现在研究看看